Nvidia Plans to Sell Its Own Device for Games

LAS VEGAS—Nvidia Corp., a well-known seller of components for videogame hardware, plans to change its strategy by marketing a gaming gadget of its own directly to consumers.

The Silicon Valley company disclosed plans for an unusual portable device that can run its own games software and wirelessly stream games running on powerful home computers. It can also wirelessly send the game images to be viewed on high-definition TVs in...